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Gas Purifier Manufacturing Capabilities

 

image of various purifiers filters traps

 

At CRS we manufacture a popular line of standard gas filters for laboratory use, we also custom design and build gas filters for special applications. Special requests have included the following:

  • Special combinations of adsorbents to deliver required output purity levels over a range of flow rates
  • Special fittings or connections for quick-connect, for push-on tube connectors, or non-standard compression fittings
  • Special sizes or end treatments
  • CRS proprietary products include highly sensitive moisture and O2 indicators as well as very-high capacity O2 adsorbents
  • CRS uses cobalt-free indicating moisture adsorbents for gas line dryers, both for high-flow low ppm applications and also to meet medium flow ppb highly demanding requirements. These adsorbents meet European requirements under REACH.

    Depending on the detailed requirements, special designs and labeling can be managed for as few as 250-500 filters per year, or less if the deviations from standard products are minor.

 


 

At CRS we can measure filter performance for oxygen, water, and hydrocarbon to the 1 ppb output level against challenge gasses, and adsorbents can be qualified in house. Figure 1, below, shows the performance of an O2-removing filter processed in-house.

graph of Oxygen-removing filter challenged witn 500 ppm O2 in N2 at 2 L/min. Output is below 5 ppb past capacity specification of 2.5 L O2.
Figure 1. Oxygen-removing filter challenged witn 500 ppm O2 in N2 at 2 L/min. Output is below 5 ppb past capacity specification of 2.5 L O2.

 


 

Our commitment to quality in our gas filters tranlsates to more effcient and quality analysis, and less down time due to cartridge changes. Some of the design features can be illustrated with the Advanced Filter System (AFS), which can also be confiured for cpecial applications:

image of Advanced filter system
  • Filters have a clean flow path to prevent contamination. Gas contacts only the metal or glass of the filter body and the seals
  • Each gas filter is helium leak checked and must pass rigorous quality standards before shipping, to ensure you receive the highest quality product available
  • Some of our filters such as the AFS I and II, also undergo a pressure test to assess the strength of each filter before use. The strength of the AFS is due to the custom design and high quality materials used in manufacturing. The recommended pressure claim for the AFS is 14 bar but has been quality tested up to 172 bar before failing.
  • Many of our glass indicating filters, as well as the AFS, have a dual seal design at the inner glass tube and at the outer polycarbonate plastic or metal tube. This dual seal system is for added safety to prevent the escape of hazardous gases.
   

 


 

CRS Cares:

Our attentiveness to our customers results in chromatography accessories that set new levels of value. At CRS, value is defined by quality products, technical support, guaranteed performance, and customer satisfaction. We offer an unrivaled lavel of expertise in our team of expereinced engineers, chemists, and production employees. Whatever the need may be, we will be dicated to each and every custom project to guarantee customer satisfaction.


Please give us a call today at 502.491.6300 with any questions you may have!

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